Improvement in bending flanges upon boiler-heads



UNTED STATES PATENT FEICEG WILLIAM-W. MARTIN, OF ALLEGHENY,PENNSYLVANIA.

Specification forming part of Letters Patent No. 55,687, dated June 19,1866.

4 ing iianges on boiler-heads, Ste., by the use ot'a revolving table, incombination with a roll or rolls, said table andfroll or rolls beingconstructed, arranged, combined, and operati ing in themannerhereinat'ter described.

To enable others skilled in the art to make and use my invention, l willproceed to describe its construction and operation.

In the accompanying drawing, which rcpresent-s a front elevation of myimproved lnaehine for turning flanges 011 boiler-heads, Ste.,

Arepresen ts the fram e or supports for the rolls,

table, and other parts. This frame may be made in various forms, and maybe made ot' wood or iron. a, I), and e represent the crossbars of theframe, and are used for securing` the bearings for the rolls C C, andfor clamp g, which is used for holding' the plate which is to be ilangedto its place on the revolving table. The rolls O C should be furnishedwith adjust.- ing-screws, as indicated by the dotted lilies marked e, orwith some other operati 11g-gear for raising` and lowering the rolls toor from their work, and the rolls should be so arranged as to have alateral motion or movement, so as to adapt the machine to boiler-headsof different size.

The clamp g should be furnished with a screw, as indicated by the dottedlines f, for the purpose ot' bringing the clamp down on the disk L,which revolves around with the plate of the boiler-head and therevolving table. This disk h, in connection with the clamp y, is usedfor the purpose otl holding the plate which is to be flanged to itsplace on the revolving table, (marked B,) whiehis placed on the upperend ot' a shaft, marked D, which has its upper bearing in thecross-piece, marked R. The shaft may be operated by any suitablemechanism desired.

The table B should be so constructed and arranged with relation to theshaft D that it can be removed with ease to give place to a larger orsmaller one, or so arranged that it could be increased or be diminishedin size for the purpose of ilanging large or small boilerheadsthat is tosay, boiler-heads ot' varied size. p

As the forni and arrangement of the various parts and their relation theone to the other is clearly shown in the accompanying drawing and willreadily be understood by the skillful mechanic. l will now proceed todescribe the operation of my improved machine for Hanging boiler-heads,etc., which is as fol lows I place the plate which is to be ilanged onthe table B.' A portion ot' this plate will extend out past the outeredge ot' the table. I then place the disk lt central to the plate L',which forms the boiler-head. I then secure the disk L to its place bythe clamp g. l then impart motion to the shaft D, which will impartmotion to the table B and to the plate i. I then bring the rolls O C, bymeans of screws e e, down on the part ot' the plate which extends overthe edge ot' the table B, and theI revolving ot' the plate 'i and tableB will revolve the rolls G C, which, by being forced down b v tlnlscrews e c until they assume the position represented by the dottedlines marked a', will force down the partotl plate i, and t'orm theflange on the lmiler-head.

Having thus described the nature, construction, and operation ot' myimprovement, what claim as of my invention is The construction andarrangement of the revolving table B and rolls C, said table and rollsoperating substantially as herein described, and for the purpose setforth.

W. W. MARTIN. Witnesses:

J AMES J. JOHNSTON, ALEXANDER HAYs.

